Linking Landscapes and Food Webs: Effects of Omnivorous Fish
... cologists increasingly recognize the need to understand how food webs and landscapes are linked (Polis et al. 2004). Fluxes of organisms, detritus, nutrients, and other materials across landscapes can strongly affect recipient food webs. For example, many studies show that subsidies of plant-availab ...
... cologists increasingly recognize the need to understand how food webs and landscapes are linked (Polis et al. 2004). Fluxes of organisms, detritus, nutrients, and other materials across landscapes can strongly affect recipient food webs. For example, many studies show that subsidies of plant-availab ...
chapter9
... “off-season” or “year-round” nonforage-based crawfish ponds. Under that scenario, feeds are intended to furnish nearly all of the nutritional needs of growing crawfish – much like intensified catfish operations. Although experimental results were encouraging, no large commercial operation has yet em ...
... “off-season” or “year-round” nonforage-based crawfish ponds. Under that scenario, feeds are intended to furnish nearly all of the nutritional needs of growing crawfish – much like intensified catfish operations. Although experimental results were encouraging, no large commercial operation has yet em ...
Whole Ecosystem Nitrogen Manipulation Experiments: A
... nitrogen manipulation experiments in natural and semi-natural ecosystems, updating an original review report from 1997. The experiments are essential to demonstrate and to improve our understanding of the ecological effects of nitrogen deposition, arising from the air pollutants nitrogen oxides and ...
... nitrogen manipulation experiments in natural and semi-natural ecosystems, updating an original review report from 1997. The experiments are essential to demonstrate and to improve our understanding of the ecological effects of nitrogen deposition, arising from the air pollutants nitrogen oxides and ...
Heathland conservation and management
... and heathland conservationists please complete Activity A and/or Activity B. ...
... and heathland conservationists please complete Activity A and/or Activity B. ...
Crawfish production
... Crawfish harvesting is usually done with baited traps. There are several types of traps. Traditional pillow traps are fished in water depths up to 6 feet. For the normal shallow ponds, some type of stand-up trap is used. These traps are constructed of wire or plastic with 3/4-inch mesh. They normall ...
... Crawfish harvesting is usually done with baited traps. There are several types of traps. Traditional pillow traps are fished in water depths up to 6 feet. For the normal shallow ponds, some type of stand-up trap is used. These traps are constructed of wire or plastic with 3/4-inch mesh. They normall ...
The History and Use of Kudzu in the Southeastern United States
... Some Alabama farmers still harvest kudzu from fields managed for this purpose by annual or biennial harvesting. It is most frequently used in this manner during dry periods, since its deep root system allows it to obtain moisture for growth when other forage species cannot. All types of grazing anim ...
... Some Alabama farmers still harvest kudzu from fields managed for this purpose by annual or biennial harvesting. It is most frequently used in this manner during dry periods, since its deep root system allows it to obtain moisture for growth when other forage species cannot. All types of grazing anim ...
Integrated Pest Management by Dale Bottrell
... For many centuries human settlemcn;s, bc.tl~aqri:uItural and urban, have had to contend with a variety of unwanted and sometimes harmful insects, weeds, microorganisms, rodent?, and other organisms-collectively, “pests.” During the last folrr decades, use of chemical pesticides has become the predo ...
... For many centuries human settlemcn;s, bc.tl~aqri:uItural and urban, have had to contend with a variety of unwanted and sometimes harmful insects, weeds, microorganisms, rodent?, and other organisms-collectively, “pests.” During the last folrr decades, use of chemical pesticides has become the predo ...
Regulation of phosphorus uptake and utilization
... and nutrient starvation [5, 6]. Plant density, propagule characteristics, weeding regime, environmental stress, ecological niche and plant growth characteristics all play vital roles in determining the yield and nutrient use efficiency of major crops [5–14]. Due to a lack of proper knowledge on plan ...
... and nutrient starvation [5, 6]. Plant density, propagule characteristics, weeding regime, environmental stress, ecological niche and plant growth characteristics all play vital roles in determining the yield and nutrient use efficiency of major crops [5–14]. Due to a lack of proper knowledge on plan ...
The Tundra Biome Tundra is the coldest of all the biomes
... miles an hour. As a result of the cold, the water in the ground freezes: the ground can be frozen to a depth of 2000 feet or more. In some places only a few inches of the top part of the ground thaw out in the summer, in other places several feet may be thawed. The part of the ground that thaws is c ...
... miles an hour. As a result of the cold, the water in the ground freezes: the ground can be frozen to a depth of 2000 feet or more. In some places only a few inches of the top part of the ground thaw out in the summer, in other places several feet may be thawed. The part of the ground that thaws is c ...
Agricultural Environmental Science WVEIS Code 0153
... Students will demonstrate basic environmental grasslands and crop production skills. ...
... Students will demonstrate basic environmental grasslands and crop production skills. ...
Lesson Overview
... energy through the process of photosynthesis. Photosynthesis captures light energy and uses it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates. This process adds oxygen to the atmosphere and removes carbon dioxide. Plants are the main photo ...
... energy through the process of photosynthesis. Photosynthesis captures light energy and uses it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates. This process adds oxygen to the atmosphere and removes carbon dioxide. Plants are the main photo ...
FACTORS AFFECTING THE SORPTION–DESORPTION OF TRACE
... greatest capacity for sorption of trace elements in cationic form. A body of evidence has demonstrated that humic matter and metal oxides are much more effective scavengers of trace elements in cationic form than even the most efficient sorbent among phyllosilicates, indicating that specific sorptio ...
... greatest capacity for sorption of trace elements in cationic form. A body of evidence has demonstrated that humic matter and metal oxides are much more effective scavengers of trace elements in cationic form than even the most efficient sorbent among phyllosilicates, indicating that specific sorptio ...
Opens external link in new window
... This review is a product of the Livestock Environmental Assessment and Performance (LEAP) Partnership. The initial objective of this review was to provide the members LEAP Technical Advisory Group (TAG) on biodiversity with a common ground of knowledge on the main biodiversity indicators and assessm ...
... This review is a product of the Livestock Environmental Assessment and Performance (LEAP) Partnership. The initial objective of this review was to provide the members LEAP Technical Advisory Group (TAG) on biodiversity with a common ground of knowledge on the main biodiversity indicators and assessm ...
The role of community and population ecology in applying
... security lies in the fact that all globally important food crops naturally form this symbiosis and the fungi help plants more efficiently obtain phosphate from the soil (Smith and Read, 2008). Stocks of phosphate fertilizer are rapidly being depleted (Gross, 2010). There is a simultaneous increase i ...
... security lies in the fact that all globally important food crops naturally form this symbiosis and the fungi help plants more efficiently obtain phosphate from the soil (Smith and Read, 2008). Stocks of phosphate fertilizer are rapidly being depleted (Gross, 2010). There is a simultaneous increase i ...
RegioNAL NAtuRAL ReSouRceS MANAgeMeNt PLAN VoLuMe 1
... has responsibility under the Natural Resources Management Act 2004 to develop and maintain an NRM plan for the region. The SAAL Regional NRM Plan provides the Board, State Government agencies and other stakeholders with a coordinated and integrated basis for maintaining and enhancing the region’s na ...
... has responsibility under the Natural Resources Management Act 2004 to develop and maintain an NRM plan for the region. The SAAL Regional NRM Plan provides the Board, State Government agencies and other stakeholders with a coordinated and integrated basis for maintaining and enhancing the region’s na ...
Effects of interactions between the green and brown food webs on
... Chunyue and Zhiqin for their unflagging love and unconditional support throughout my life and studies. These past several years have not been an easy ride, both academically and personally. I truly thank my husband Zhiting for sticking by my side, even when I was irritable and depressed. I feel that ...
... Chunyue and Zhiqin for their unflagging love and unconditional support throughout my life and studies. These past several years have not been an easy ride, both academically and personally. I truly thank my husband Zhiting for sticking by my side, even when I was irritable and depressed. I feel that ...
Mechanisms and mitigation of food web change in stream ecosystems
... investigate effects of eutrophication on stream communities, specifically food web structure and ecosystem function. From a food web perspective, eutrophication is a shi in the form and amount of available energy from externally-produced (allochthonous) to internal (autochthonous) basal resources. Su ...
... investigate effects of eutrophication on stream communities, specifically food web structure and ecosystem function. From a food web perspective, eutrophication is a shi in the form and amount of available energy from externally-produced (allochthonous) to internal (autochthonous) basal resources. Su ...
EnviroFacts - Syngenta US
... Chlorothalonil is widely used on many different crops and is typically applied several times a season with short intervals between applications. Chlorothalonil was first registered in the United States in 1966 for use on turf grass. There are approximately 100 chlorothalonil products and 100 Special ...
... Chlorothalonil is widely used on many different crops and is typically applied several times a season with short intervals between applications. Chlorothalonil was first registered in the United States in 1966 for use on turf grass. There are approximately 100 chlorothalonil products and 100 Special ...
3337 CBD Synthesis.indd - Millennium Ecosystem Assessment
... Biodiversity benefits people through more than just its contribution to material welfare and livelihoods. Biodiversity contributes to security, resiliency, social relations, health, and freedom of choices and actions. ...
... Biodiversity benefits people through more than just its contribution to material welfare and livelihoods. Biodiversity contributes to security, resiliency, social relations, health, and freedom of choices and actions. ...
IMPACT OF PREDATORS ON THE ABUNDANCE OF
... that the effects of predators (centipedes) on the abundance of H. nitidus would increase from ...
... that the effects of predators (centipedes) on the abundance of H. nitidus would increase from ...
The role of diversity in savannas: modelling plant functional diversity
... grass-dominated state of the ecosystem to a state which is mainly dominated by woody plants. Degradation in general can be defined as changes in ecosystem functioning (Eldridge et al., 2011), ultimately leading to a loss of ecosystem services (Chapin et al., 2002). In savanna ecosystems, this typica ...
... grass-dominated state of the ecosystem to a state which is mainly dominated by woody plants. Degradation in general can be defined as changes in ecosystem functioning (Eldridge et al., 2011), ultimately leading to a loss of ecosystem services (Chapin et al., 2002). In savanna ecosystems, this typica ...
Utilizing and conserving agrobiodiversity in agricultural landscape
... long term driving force behind organic farming systems was and is to support a stable crop growth by avoiding soil degradation through a management system that restores and maintains soil health as the basis for healthy crops, animals and humans. Soil fertility includes a good soil structure to allo ...
... long term driving force behind organic farming systems was and is to support a stable crop growth by avoiding soil degradation through a management system that restores and maintains soil health as the basis for healthy crops, animals and humans. Soil fertility includes a good soil structure to allo ...
Food Web Responses to Augmenting
... first on fibrous roots and later on the cortex of major roots. Wounding of the major roots by these insects facilitates infection by Phytophthora spp. The resulting pest-disease complex can kill trees, and orchards are sometimes abandoned within several years after the insect is first detected. Mana ...
... first on fibrous roots and later on the cortex of major roots. Wounding of the major roots by these insects facilitates infection by Phytophthora spp. The resulting pest-disease complex can kill trees, and orchards are sometimes abandoned within several years after the insect is first detected. Mana ...
environmental science and engineering
... 23. What are the advantages of rain water harvesting? Ans: Advantages of rain water harvesting – Reduction in the use of current for pumping water, increase the availability of water from the wells, rise in ground water levels, minimizing soil erosion and flood hazards, upgrading social and environm ...
... 23. What are the advantages of rain water harvesting? Ans: Advantages of rain water harvesting – Reduction in the use of current for pumping water, increase the availability of water from the wells, rise in ground water levels, minimizing soil erosion and flood hazards, upgrading social and environm ...
Similar biotic factors affect early establishment and abundance of an
... exotics. This discrepancy among studies suggests that more experimental studies, coupled with observational studies across landscapes, are necessary to understand whether and how resource availability and community structure limits invasions at various stages of invasion (i.e., establishment and pop ...
... exotics. This discrepancy among studies suggests that more experimental studies, coupled with observational studies across landscapes, are necessary to understand whether and how resource availability and community structure limits invasions at various stages of invasion (i.e., establishment and pop ...
Sustainable agriculture
Sustainable agriculture is the act of farming based on an understanding of ecosystem services, the study of relationships between organisms and their environment. It has been defined as ""an integrated system of plant and animal production practices having a site-specific application that will last over the long term"", for example: Satisfy human food and fiber needs Enhance environmental quality and the natural resource base upon which the agricultural economy depends Make the most efficient use of non-renewable resources and on-farm resources and integrate, where appropriate, natural biological cycles and controls Sustain the economic viability of farm operations Enhance the quality of life for farmers and society as a whole↑